<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
<meta name="viewport" content="width=device-width">
<meta name="theme-color" content="#222"><meta name="generator" content="Hexo 7.3.0">

  <link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png">
  <link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32.ico">
  <link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16.ico">
  <link rel="mask-icon" href="/images/logo.svg" color="#222">

<link rel="stylesheet" href="/css/main.css">



<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css" integrity="sha256-wiz7ZSCn/btzhjKDQBms9Hx4sSeUYsDrTLg7roPstac=" crossorigin="anonymous">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.1.1/animate.min.css" integrity="sha256-PR7ttpcvz8qrF57fur/yAx1qXMFJeJFiA6pSzWi0OIE=" crossorigin="anonymous">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/fancyapps-ui/5.0.28/fancybox/fancybox.css" integrity="sha256-6cQIC71/iBIYXFK+0RHAvwmjwWzkWd+r7v/BX3/vZDc=" crossorigin="anonymous">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/pace/1.2.4/themes/green/pace-theme-minimal.css">
  <script src="https://cdnjs.cloudflare.com/ajax/libs/pace/1.2.4/pace.min.js" integrity="sha256-gqd7YTjg/BtfqWSwsJOvndl0Bxc8gFImLEkXQT8+qj0=" crossorigin="anonymous"></script>

<script class="next-config" data-name="main" type="application/json">{"hostname":"sumumm.github.io","root":"/","images":"/images","scheme":"Gemini","darkmode":false,"version":"8.19.2","exturl":false,"sidebar":{"position":"left","display":"post","padding":18,"offset":12},"copycode":{"enable":true,"style":"mac"},"fold":{"enable":true,"height":300},"bookmark":{"enable":false,"color":"#222","save":"auto"},"mediumzoom":false,"lazyload":true,"pangu":false,"comments":{"style":"tabs","active":null,"storage":true,"lazyload":false,"nav":null},"stickytabs":false,"motion":{"enable":true,"async":true,"transition":{"menu_item":"fadeInDown","post_block":"fadeIn","post_header":"fadeInDown","post_body":"fadeInDown","coll_header":"fadeInLeft","sidebar":"fadeInUp"}},"i18n":{"placeholder":"搜索...","empty":"没有找到任何搜索结果：${query}","hits_time":"找到 ${hits} 个搜索结果（用时 ${time} 毫秒）","hits":"找到 ${hits} 个搜索结果"},"path":"/search.xml","localsearch":{"enable":true,"trigger":"auto","top_n_per_article":1,"unescape":false,"preload":false}}</script><script src="/js/config.js"></script>

    <meta name="description" content="本文主要是STM32开发——电源管理中三种模式的实现的一些基础知识相关笔记，若笔记中有错误或者不合适的地方，欢迎批评指正😃。">
<meta property="og:type" content="article">
<meta property="og:title" content="LV16-29-电源管理-02-三种模式实现">
<meta property="og:url" content="https://sumumm.github.io/post/12c32d69.html">
<meta property="og:site_name" content="苏木">
<meta property="og:description" content="本文主要是STM32开发——电源管理中三种模式的实现的一些基础知识相关笔记，若笔记中有错误或者不合适的地方，欢迎批评指正😃。">
<meta property="og:locale" content="zh_CN">
<meta property="og:image" content="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610191800976.png">
<meta property="og:image" content="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610191131427.png">
<meta property="og:image" content="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610191217570.png">
<meta property="og:image" content="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610192149217.png">
<meta property="og:image" content="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610192458017.png">
<meta property="og:image" content="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610195646101.png">
<meta property="og:image" content="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610202059514.png">
<meta property="og:image" content="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610215244192.png">
<meta property="article:published_time" content="2023-06-11T08:26:00.000Z">
<meta property="article:modified_time" content="2025-06-13T16:25:57.015Z">
<meta property="article:author" content="苏木">
<meta property="article:tag" content="LV16-STM32开发">
<meta name="twitter:card" content="summary">
<meta name="twitter:image" content="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610191800976.png">


<link rel="canonical" href="https://sumumm.github.io/post/12c32d69.html">



<script class="next-config" data-name="page" type="application/json">{"sidebar":"","isHome":false,"isPost":true,"lang":"zh-CN","comments":true,"permalink":"https://sumumm.github.io/post/12c32d69.html","path":"post/12c32d69.html","title":"LV16-29-电源管理-02-三种模式实现"}</script>

<script class="next-config" data-name="calendar" type="application/json">""</script>
<title>LV16-29-电源管理-02-三种模式实现 | 苏木</title>
  








    <script src="/js/browser_tools_disable.js"></script>

  <noscript>
    <link rel="stylesheet" href="/css/noscript.css">
  </noscript>
<!-- hexo injector head_end start --><link rel="stylesheet" href="https://unpkg.com/hexo-next-tags-plus@latest/lib/tag_plus.css" media="defer" onload="this.media='all'"><!-- hexo injector head_end end --></head>

<body itemscope itemtype="http://schema.org/WebPage" class="use-motion">
  <div class="headband"></div>

  <main class="main">
    <div class="column">
      <header class="header" itemscope itemtype="http://schema.org/WPHeader"><div class="site-brand-container">
  <div class="site-nav-toggle">
    <div class="toggle" aria-label="切换导航栏" role="button">
        <span class="toggle-line"></span>
        <span class="toggle-line"></span>
        <span class="toggle-line"></span>
    </div>
  </div>

  <div class="site-meta">

    <a href="/" class="brand" rel="start">
      <i class="logo-line"></i>
      <p class="site-title">苏木</p>
      <i class="logo-line"></i>
    </a>
      <p class="site-subtitle" itemprop="description">我的学习之路</p>
  </div>

  <div class="site-nav-right">
    <div class="toggle popup-trigger" aria-label="搜索" role="button">
        <i class="fa fa-search fa-fw fa-lg"></i>
    </div>
  </div>
</div>



<nav class="site-nav">
  <ul class="main-menu menu"><li class="menu-item menu-item-home"><a href="/" rel="section"><i class="fa fa-home fa-fw"></i>苏木的家</a></li><li class="menu-item menu-item-categories"><a href="/categories/" rel="section"><i class="fa fa-th fa-fw"></i>分类页<span class="badge">42</span></a></li><li class="menu-item menu-item-archives"><a href="/archives/" rel="section"><i class="fa fa-archive fa-fw"></i>归档页<span class="badge">673</span></a></li><li class="menu-item menu-item-flink"><a href="/flink/" rel="section"><i class="fa fa-link fa-fw"></i>友人帐</a></li><li class="menu-item menu-item-about"><a href="/about/" rel="section"><i class="fa fa-user fa-fw"></i>关于我</a></li>
      <li class="menu-item menu-item-search">
        <a role="button" class="popup-trigger"><i class="fa fa-search fa-fw"></i>搜索
        </a>
      </li>
  </ul>
</nav>



  <div class="search-pop-overlay">
    <div class="popup search-popup"><div class="search-header">
  <span class="search-icon">
    <i class="fa fa-search"></i>
  </span>
  <div class="search-input-container">
    <input autocomplete="off" autocapitalize="off" maxlength="80"
           placeholder="搜索..." spellcheck="false"
           type="search" class="search-input">
  </div>
  <span class="popup-btn-close" role="button">
    <i class="fa fa-times-circle"></i>
  </span>
</div>
<div class="search-result-container no-result">
  <div class="search-result-icon">
    <i class="fa fa-spinner fa-pulse fa-5x"></i>
  </div>
</div>

    </div>
  </div>

</header>
        
  
  <aside class="sidebar">

    <div class="sidebar-inner sidebar-nav-active sidebar-toc-active">
      <ul class="sidebar-nav">
        <li class="sidebar-nav-toc">
          文章目录
        </li>
        <li class="sidebar-nav-overview">
          站点概览
        </li>
      </ul>

      <div class="sidebar-panel-container">
        <!--noindex-->
        <div class="post-toc-wrap sidebar-panel">
            <div class="post-toc animated"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#%E4%B8%80%E3%80%81%E9%80%9A%E7%94%A8%E9%85%8D%E7%BD%AE"><span class="nav-text">一、通用配置</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#1-%E7%A1%AC%E4%BB%B6%E8%AE%BE%E8%AE%A1"><span class="nav-text">1. 硬件设计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#2-STM32CubeMX%E9%85%8D%E7%BD%AE"><span class="nav-text">2. STM32CubeMX配置</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#2-1-%E6%97%B6%E9%92%9F%E6%A0%91"><span class="nav-text">2.1 时钟树</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#2-2-%E5%88%9D%E5%A7%8B%E5%8C%96LED"><span class="nav-text">2.2 初始化LED</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#2-3-%E5%88%9D%E5%A7%8B%E5%8C%96%E6%8C%89%E9%94%AE"><span class="nav-text">2.3 初始化按键</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#2-4-%E4%B8%AD%E6%96%AD%E9%85%8D%E7%BD%AE"><span class="nav-text">2.4 中断配置</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#2-5-%E4%B8%B2%E5%8F%A3%E9%85%8D%E7%BD%AE"><span class="nav-text">2.5 串口配置</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#3-%E4%B8%AD%E6%96%AD%E6%9C%8D%E5%8A%A1%E5%87%BD%E6%95%B0"><span class="nav-text">3. 中断服务函数</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#4-%E6%81%A2%E5%A4%8D%E6%97%B6%E9%92%9F%E5%87%BD%E6%95%B0"><span class="nav-text">4. 恢复时钟函数</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#5-%E6%97%A0%E6%B3%95%E4%B8%8B%E8%BD%BD%E4%BA%86%EF%BC%9F"><span class="nav-text">5. 无法下载了？</span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E4%BA%8C%E3%80%81%E7%9D%A1%E7%9C%A0%E6%A8%A1%E5%BC%8F"><span class="nav-text">二、睡眠模式</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#1-%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1"><span class="nav-text">1. 软件设计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#2-%E7%9D%A1%E7%9C%A0%E6%A8%A1%E5%BC%8F%E5%94%A4%E9%86%92%E5%AE%9E%E7%8E%B0"><span class="nav-text">2. 睡眠模式唤醒实现</span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E4%B8%89%E3%80%81%E5%81%9C%E6%AD%A2%E6%A8%A1%E5%BC%8F"><span class="nav-text">三、停止模式</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#1-%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1-1"><span class="nav-text">1. 软件设计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#2-%E5%81%9C%E6%AD%A2%E6%A8%A1%E5%BC%8F%E5%94%A4%E9%86%92%E5%AE%9E%E7%8E%B0"><span class="nav-text">2. 停止模式唤醒实现</span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E5%9B%9B%E3%80%81%E5%BE%85%E6%9C%BA%E6%A8%A1%E5%BC%8F"><span class="nav-text">四、待机模式</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#1-%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1-2"><span class="nav-text">1. 软件设计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#2-%E5%BE%85%E6%9C%BA%E6%A8%A1%E5%BC%8F%E5%94%A4%E9%86%92%E5%AE%9E%E7%8E%B0"><span class="nav-text">2. 待机模式唤醒实现</span></a></li></ol></li><li class="nav-item nav-level-1"><a class="nav-link" href="#%E4%BA%94%E3%80%81%E7%94%B5%E6%BA%90%E7%9B%91%E6%8E%A7"><span class="nav-text">五、电源监控</span></a><ol class="nav-child"><li class="nav-item nav-level-2"><a class="nav-link" href="#1-%E8%BD%AF%E4%BB%B6%E8%AE%BE%E8%AE%A1-3"><span class="nav-text">1. 软件设计</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#2-%E6%8E%89%E7%94%B5%E6%A3%80%E6%B5%8B%E5%AE%9E%E7%8E%B0"><span class="nav-text">2. 掉电检测实现</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#2-1-%E5%88%9D%E5%A7%8B%E5%8C%96-PVD"><span class="nav-text">2.1 初始化 PVD  </span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#2-2-PVD-%E4%B8%AD%E6%96%AD%E6%9C%8D%E5%8A%A1%E5%87%BD%E6%95%B0"><span class="nav-text">2.2 PVD 中断服务函数  </span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#2-3-main%E5%87%BD%E6%95%B0"><span class="nav-text">2.3 main函数</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#3-%E5%AE%9E%E9%AA%8C%E6%95%88%E6%9E%9C"><span class="nav-text">3. 实验效果</span></a></li></ol></li></ol></div>
        </div>
        <!--/noindex-->

        <div class="site-overview-wrap sidebar-panel">
          <div class="site-author animated" itemprop="author" itemscope itemtype="http://schema.org/Person">
    <img class="site-author-image" itemprop="image" alt="苏木"
      src="/images/avatar.jpg">
  <p class="site-author-name" itemprop="name">苏木</p>
  <div class="site-description" itemprop="description">莫道桑榆晚，为霞尚满天</div>
</div>
<div class="site-state-wrap animated">
  <nav class="site-state">
      <div class="site-state-item site-state-posts">
        <a href="/archives/">
          <span class="site-state-item-count">673</span>
          <span class="site-state-item-name">日志</span>
        </a>
      </div>
      <div class="site-state-item site-state-categories">
          <a href="/categories/">
        <span class="site-state-item-count">42</span>
        <span class="site-state-item-name">分类</span></a>
      </div>
      <div class="site-state-item site-state-tags">
        <span class="site-state-item-count">43</span>
        <span class="site-state-item-name">标签</span>
      </div>
  </nav>
</div>
  <div class="links-of-author animated">
      <span class="links-of-author-item">
        <a href="https://github.com/sumumm" title="GitHub → https:&#x2F;&#x2F;github.com&#x2F;sumumm" rel="noopener me" target="_blank"><i class="fab fa-github fa-fw"></i>GitHub</a>
      </span>
  </div>

        </div>
      </div>
    </div>

    
  </aside>


    </div>

    <div class="main-inner post posts-expand">


  


<div class="post-block">
  
  

  <article itemscope itemtype="http://schema.org/Article" class="post-content" lang="zh-CN">
    <link itemprop="mainEntityOfPage" href="https://sumumm.github.io/post/12c32d69.html">

    <span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
      <meta itemprop="image" content="/images/avatar.jpg">
      <meta itemprop="name" content="苏木">
    </span>

    <span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
      <meta itemprop="name" content="苏木">
      <meta itemprop="description" content="莫道桑榆晚，为霞尚满天">
    </span>

    <span hidden itemprop="post" itemscope itemtype="http://schema.org/CreativeWork">
      <meta itemprop="name" content="LV16-29-电源管理-02-三种模式实现 | 苏木">
      <meta itemprop="description" content="">
    </span>
      <header class="post-header">
        <h1 class="post-title" itemprop="name headline">
          LV16-29-电源管理-02-三种模式实现
        </h1>

        <div class="post-meta-container">
          <div class="post-meta">
    <span class="post-meta-item">
      <span class="post-meta-item-icon">
        <i class="far fa-calendar"></i>
      </span>
      <span class="post-meta-item-text">发表于</span>

      <time title="创建时间：2023-06-11 16:26:00" itemprop="dateCreated datePublished" datetime="2023-06-11T16:26:00+08:00">2023-06-11</time>
    </span>
    <span class="post-meta-item">
      <span class="post-meta-item-icon">
        <i class="far fa-folder"></i>
      </span>
      <span class="post-meta-item-text">分类于</span>
        <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
          <a href="/categories/%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/" itemprop="url" rel="index"><span itemprop="name">嵌入式开发</span></a>
        </span>
          ，
        <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
          <a href="/categories/%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/" itemprop="url" rel="index"><span itemprop="name">01HQ课程体系</span></a>
        </span>
          ，
        <span itemprop="about" itemscope itemtype="http://schema.org/Thing">
          <a href="/categories/%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/" itemprop="url" rel="index"><span itemprop="name">LV16-STM32开发</span></a>
        </span>
    </span>

  
    <span class="post-meta-break"></span>
    <span class="post-meta-item" title="本文字数">
      <span class="post-meta-item-icon">
        <i class="far fa-file-word"></i>
      </span>
      <span class="post-meta-item-text">本文字数：</span>
      <span>5.5k</span>
    </span>
    <span class="post-meta-item" title="阅读时长">
      <span class="post-meta-item-icon">
        <i class="far fa-clock"></i>
      </span>
      <span class="post-meta-item-text">阅读时长 &asymp;</span>
      <span>20 分钟</span>
    </span>
</div>

        </div>
      </header>

    
    
    
    <div class="post-body" itemprop="articleBody"><p>本文主要是STM32开发——电源管理中三种模式的实现的一些基础知识相关笔记，若笔记中有错误或者不合适的地方，欢迎批评指正😃。</p>
<span id="more"></span>

<!-- Photo: https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/ -->

<details class="folding-tag" blue><summary> 点击查看使用工具及版本 </summary>
              <div class='content'>
              <table>    <tr>        <td align="center" width=150px>Windows</td>        <td align="left">windows11</td>    </tr>    <tr>        <td align="center">Ubuntu</td>        <td align="left">Ubuntu16.04的64位版本</td>      </tr>    <tr>        <td align="center">VMware® Workstation 16 Pro</td>        <td align="left">16.2.3 build-19376536</td>      </tr>    <tr>        <td align="center">SecureCRT</td>        <td align="left">Version 8.7.2 (x64 build 2214)   -   正式版-2020年5月14日</td>      </tr>    <tr>        <td align="center">开发板</td>        <td align="left">正点原子 i.MX6ULL Linux阿尔法开发板</td>      </tr>    <tr>        <td align="center">uboot</td>        <td align="left">NXP官方提供的uboot，NXP提供的版本为uboot-imx-rel_imx_4.1.15_2.1.0_ga(使用的uboot版本为U-Boot 2016.03)</td>      </tr>    <tr>        <td align="center">linux内核</td>        <td align="left">linux-4.15(NXP官方提供)</td>      </tr>    <tr>        <td align="center">STM32开发板</td>        <td align="left">正点原子战舰V3(STM32F103ZET6)</td>      </tr></table>
              </div>
            </details>

<details class="folding-tag" blue><summary> 点击查看本文参考资料 </summary>
              <div class='content'>
              <ul><li>通用</li></ul><table><tr><td align="center">分类  </td><td align="center">网址</td><td align="center">说明</td></tr><tr><td align="center" rowspan="4">官方网站</td><td align="left"><a href="https://www.arm.com/" target="_blank">https://www.arm.com/</a></td><td align="left">ARM官方网站，在这里我们可以找到Cotex-Mx以及ARMVx的一些文档</td></tr><tr>                                            <td align="left"><a href="https://www.st.com/content/st_com/zh.html" target="_blank">https://www.st.com/content/st_com/zh.html</a></td><td align="left">ST官方网站，在这里我们可以找到STM32的相关文档</td></tr><tr>                                            <td align="left"><a href="https://www.stmcu.com.cn/" target="_blank">https://www.stmcu.com.cn/</a></td><td align="left">意法半导体ST中文官方网站，在这里我们可以找到STM32的相关中文参考文档</td></tr><tr>                                            <td align="left"><a href="http://elm-chan.org/fsw/ff/00index_e.html" target="_blank">http://elm-chan.org/fsw/ff/00index_e.html</a></td><td align="left">FatFs文件系统官网</td></tr><tr><td align="center" rowspan="3">教程书籍</td><td align="left"><a href="STM32开发相关资料/01ARM参考资料/ARM Cortex-M3权威指南(中文).pdf" target="_blank">《ARM Cortex-M3权威指南》</a></td><td alirn="left" rowspan="3">ARM公司专家Joseph Yiu（姚文祥）的力作，中文翻译是NXP的宋岩</td></tr><tr>                                            <td align="left"><a href="STM32开发相关资料/01ARM参考资料/ARM Cortex-M0权威指南(中文).pdf" target="_blank">《ARM Cortex-M0权威指南》</a></td></tr><tr>                                            <td align="left"><a href="" target="_blank">《ARM Cortex-M3与Cortex-M4权威指南》</a></td></tr><tr><td align="center" rowspan="4">开发论坛</td><td align="left"><a href="http://47.111.11.73/forum.php" target="_blank">http://47.111.11.73/forum.php</a></td><td align="left">开源电子网，正点原子的资料下载及问题讨论论坛</td></tr><tr>                                            <td align="left"><a href="https://www.firebbs.cn/forum.php" target="_blank">https://www.firebbs.cn/forum.php</a></td><td align="left">国内Kinetis开发板-野火/秉火（刘火良）主持的论坛，现也做STM32和i.MX RT</td></tr><tr>                                            <td align="left"><a href="https://www.amobbs.com/index.php" target="_blank">https://www.amobbs.com/index.php</a></td><td align="left">阿莫（莫进明）主持的论坛，号称国内最早最火的电子论坛，以交流Atmel AVR系列单片机起家，现已拓展到嵌入式全平台，其STM32系列帖子有70W+。</td></tr><tr>                                            <td align="left"><a href="http://download.100ask.net/index.html" target="_blank">http://download.100ask.net/index.html</a></td><td align="left">韦东山嵌入式资料中心，有些STM32和linux的相关资料也可以来这里找。</td></tr><tr><td align="center" rowspan="3">博客参考</td><td align="left"><a href="http://www.openedv.com/" target="_blank">http://www.openedv.com/</a></td><td align="left">开源网-原子哥个人博客</td></tr><tr>                                            <td align="left"><a href="http://blog.chinaaet.com/jihceng0622" target="_blank">http://blog.chinaaet.com/jihceng0622</a></td><td align="left">博主是原Freescale现NXP的现场应用工程师</td></tr><tr>                                            <td align="left"><a href="https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/cortex-m-resources" target="_blank">cortex-m-resources</a></td><td align="left">这其实并不算是一个博客，这是ARM公司专家Joseph Yiu收集整理的所有对开发者有用的官方Cortex-M资料链接（也包含极少数外部资源链接）</td></tr></table><ul><li>STM32</li></ul><table>    <tr><td align="center" rowspan="2">STM32</td><td align="left"><a href="https://doc.embedfire.com/mcu/stm32/f103/hal_general/zh/latest/index.html" target="_blank">STM32 HAL库开发实战指南——基于F103系列开发板</a></td><td align="left">野火STM32开发教程在线文档</td></tr><tr>                                            <td align="left"><a href="https://doc.embedfire.com/mcu/stm32/f103badao/std/zh/latest/index.html" target="_blank">STM32库开发实战指南——基于野火霸道开发板</a></td><td align="left">野火STM32开发教程在线文档</td></tr></table><ul><li>SD卡</li></ul><table>    <tr><td align="left"><a href="https://www.sdcard.org/" target="_blank">SD Association</a></td><td align="left">提供了SD存储卡和SDIO卡系统规范</td></tr></table>
              </div>
            </details>

<details class="folding-tag" blue><summary> 点击查看相关文件下载 </summary>
              <div class='content'>
              <table>    <tr><td align="left"><a href="https://www.st.com/resource/en/datasheet/stm32f103ze.pdf" target="_blank">STM32F103xx英文数据手册</a></td><td align="left">STM32F103xC/D/E系列的英文数据手册</td></tr>    <tr><td align="left"><a href="https://www.stmcu.com.cn/Designresource/detail/localization_document%20/709978" target="_blank">STM32F103xx中文数据手册</a></td><td align="left">STM32F103xC/D/E系列的中文数据手册</td></tr>    <tr><td align="left"><a href="https://www.st.com/resource/en/reference_manual/rm0008-stm32f101xx-stm32f102xx-stm32f103xx-stm32f105xx-and-stm32f107xx-advanced-armbased-32bit-mcus-stmicroelectronics.pdf" target="_blank">STM32F10xxx英文参考手册（RM0008）</a></td><td align="left">STM32F10xxx系列的英文参考手册</td></tr>    <tr><td align="left"><a href="https://www.stmcu.com.cn/Designresource/detail/localization_document%20/710001" target="_blank">STM32F10xxx中文参考手册（RM0008）</a></td><td align="left">STM32F10xxx系列的中文参考手册</td></tr>    <tr><td align="left"><a href="https://developer.arm.com/documentation/100165/0201/?lang=en" target="_blank">Arm Cortex-M3 处理器技术参考手册-英文版</a></td><td align="left">Cortex-M3技术参考手册-英文版</td></tr>    <tr><td align="left"><a href="https://www.st.com/resource/en/programming_manual/pm0056-stm32f10xxx20xxx21xxxl1xxxx-cortexm3-programming-manual-stmicroelectronics.pdf" target="_blank">STM32F10xxx Cortex-M3编程手册-英文版(PM0056)</a></td><td align="left">STM32F10xxx/20xxx/21xxx/L1xxxx系列Cortex-M3编程手册-英文版</td></tr>    <tr><td align="left"><a href="https://www.sdcard.org/downloads/pls/" target="_blank">SD卡相关资料——最新版本</a></td><td align="left">有关SD卡的一些资料可以从这里下载</td></tr>    <tr><td align="left"><a href="https://www.sdcard.org/downloads/pls/archives/" target="_blank">SD卡相关资料——历史版本</a></td><td align="left">有关SD卡的一些历史版本资料可以从这里下载，比如后边看的SD卡2.0协议</td></tr>    <tr><td align="left"><a href="./" target="_blank">SD 2.0 协议标准完整版</a></td><td align="left">这是一篇关于SD卡2.0协议的中文文档，还是比较有参考价值的，可以一看</td></tr></table>
              </div>
            </details> 

<h1 id="一、通用配置"><a href="#一、通用配置" class="headerlink" title="一、通用配置"></a><font size=3>一、通用配置</font></h1><h2 id="1-硬件设计"><a href="#1-硬件设计" class="headerlink" title="1. 硬件设计"></a><font size=3>1. 硬件设计</font></h2><p>硬件主要使用到了按键、 LED 以及使用串口输出调试信息。 </p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610191800976.png" alt="image-20230610191800976" style="zoom: 33%;" />

<h2 id="2-STM32CubeMX配置"><a href="#2-STM32CubeMX配置" class="headerlink" title="2. STM32CubeMX配置"></a><font size=3>2. STM32CubeMX配置</font></h2><h3 id="2-1-时钟树"><a href="#2-1-时钟树" class="headerlink" title="2.1 时钟树"></a><font size=3>2.1 时钟树</font></h3><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610191131427.png" alt="image-20230610191131427" style="zoom: 25%;" />

<h3 id="2-2-初始化LED"><a href="#2-2-初始化LED" class="headerlink" title="2.2 初始化LED"></a><font size=3>2.2 初始化LED</font></h3><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610191217570.png" alt="image-20230610191217570" style="zoom:45%;" />

<p>就是两个LED的初始化。</p>
<h3 id="2-3-初始化按键"><a href="#2-3-初始化按键" class="headerlink" title="2.3 初始化按键"></a><font size=3>2.3 初始化按键</font></h3><p>这里的按键需要开启中断，这里使用KEY0，按下的时候为低电平，所以配置成中断的时候，对应的GPIO设置为上拉。</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610192149217.png" alt="image-20230610192149217" style="zoom: 33%;" />

<h3 id="2-4-中断配置"><a href="#2-4-中断配置" class="headerlink" title="2.4 中断配置"></a><font size=3>2.4 中断配置</font></h3><p>接下来配置一下NVIC：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610192458017.png" alt="image-20230610192458017" style="zoom:50%;" />

<h3 id="2-5-串口配置"><a href="#2-5-串口配置" class="headerlink" title="2.5 串口配置"></a><font size=3>2.5 串口配置</font></h3><p>就按正常的打开串口即可，另外需要做一下printf的移植。</p>
<h2 id="3-中断服务函数"><a href="#3-中断服务函数" class="headerlink" title="3. 中断服务函数"></a><font size=3>3. 中断服务函数</font></h2><p>实现下边的函数：</p>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">void</span> <span class="title function_">HAL_GPIO_EXTI_Callback</span><span class="params">(<span class="type">uint16_t</span> GPIO_Pin)</span></span><br><span class="line">&#123;</span><br><span class="line">    <span class="comment">/* Prevent unused argument(s) compilation warning */</span></span><br><span class="line">    UNUSED(GPIO_Pin);</span><br><span class="line">    <span class="comment">/* <span class="doctag">NOTE:</span> This function Should not be modified, when the callback is needed,</span></span><br><span class="line"><span class="comment">             the HAL_GPIO_EXTI_Callback could be implemented in the user file</span></span><br><span class="line"><span class="comment">     */</span></span><br><span class="line">	<span class="keyword">switch</span>(GPIO_Pin)</span><br><span class="line">	&#123;</span><br><span class="line">		<span class="keyword">case</span> GPIO_PIN_4:</span><br><span class="line">			<span class="built_in">printf</span>(<span class="string">&quot;KWY0按下，产生中断，即将唤醒\r\n&quot;</span>);</span><br><span class="line">			</span><br><span class="line">			<span class="keyword">break</span>;</span><br><span class="line">		<span class="keyword">default</span>:</span><br><span class="line">			<span class="keyword">break</span>;</span><br><span class="line">	&#125;</span><br><span class="line"></span><br></pre></td></tr></table></figure>

<h2 id="4-恢复时钟函数"><a href="#4-恢复时钟函数" class="headerlink" title="4. 恢复时钟函数"></a><font size=3>4. 恢复时钟函数</font></h2><p>与睡眠模式不一样，系统从停止模式被唤醒时，是使用 HSI 作为系统时钟的，在 STM32F103 中，HSI 时钟一般为 8MHz，与我们常用的 72MHz 相关太远，它会影响各种外设的工作频率。所以在系统从停止模式唤醒后，若希望各种外设恢复正常的工作状态，就要恢复停止模式前使用的系统时钟，这里定义了一个 SYSCLKConfig_STOP 函数，用于恢复系统时钟 ：</p>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment">  * @brief  从停止模式唤醒后配置系统时钟:启用HSE、PLL并选择PLL作为系统时钟源。</span></span><br><span class="line"><span class="comment">  */</span></span><br><span class="line"><span class="type">void</span> <span class="title function_">SYSCLKConfig_STOP</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line">&#123;</span><br><span class="line">  RCC_ClkInitTypeDef RCC_ClkInitStruct = &#123;<span class="number">0</span>&#125;;</span><br><span class="line">  RCC_OscInitTypeDef RCC_OscInitStruct = &#123;<span class="number">0</span>&#125;;</span><br><span class="line">  <span class="type">uint32_t</span> pFLatency = <span class="number">0</span>;</span><br><span class="line"></span><br><span class="line">  <span class="comment">/* 启用电源控制时钟 */</span></span><br><span class="line">  __HAL_RCC_PWR_CLK_ENABLE();</span><br><span class="line"></span><br><span class="line">  <span class="comment">/* 根据内部RCC寄存器获取振荡器配置 */</span></span><br><span class="line">  HAL_RCC_GetOscConfig(&amp;RCC_OscInitStruct);</span><br><span class="line"></span><br><span class="line">  <span class="comment">/* 从停止模式唤醒后重新配置系统时钟: 启用HSE和PLL */</span></span><br><span class="line">  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;</span><br><span class="line">  RCC_OscInitStruct.HSEState = RCC_HSE_ON;</span><br><span class="line">  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;</span><br><span class="line">  <span class="keyword">if</span> (HAL_RCC_OscConfig(&amp;RCC_OscInitStruct) != HAL_OK)</span><br><span class="line">  &#123;</span><br><span class="line">    Error_Handler();</span><br><span class="line">  &#125;</span><br><span class="line"></span><br><span class="line">  <span class="comment">/* 根据内部RCC寄存器获取时钟配置 */</span></span><br><span class="line">  HAL_RCC_GetClockConfig(&amp;RCC_ClkInitStruct, &amp;pFLatency);</span><br><span class="line"></span><br><span class="line">  <span class="comment">/* 选择 PLL 作为系统时钟源, 并配置 HCLK、PCLK1 和 PCLK2时钟分频系数 */</span></span><br><span class="line">  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;</span><br><span class="line">  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;</span><br><span class="line">  <span class="keyword">if</span> (HAL_RCC_ClockConfig(&amp;RCC_ClkInitStruct, pFLatency) != HAL_OK)</span><br><span class="line">  &#123;</span><br><span class="line">    Error_Handler();</span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>



<h2 id="5-无法下载了？"><a href="#5-无法下载了？" class="headerlink" title="5. 无法下载了？"></a><font size=3>5. 无法下载了？</font></h2><p><strong>【注意】</strong>有当系统处于睡眠模式低功耗状态时 (包括后面的停止模式及待机模式)，使用 DAP 下载器是无法给芯片下载程序的，所以下载程序时要先把系统唤醒。或者使用如下方法：按着板子的复位按键，使系统处于复位状态，然后点击电脑端的下载按钮下载程序，这时再释放复位按键，就能正常给板子下载程序了。  但是我用的JLink好像没什么影响，当无法下载程序的时候知道这样操作即可。</p>
<h1 id="二、睡眠模式"><a href="#二、睡眠模式" class="headerlink" title="二、睡眠模式"></a><font size=3>二、睡眠模式</font></h1><h2 id="1-软件设计"><a href="#1-软件设计" class="headerlink" title="1. 软件设计"></a><font size=3>1. 软件设计</font></h2><p>（1）初始化用于唤醒的中断按键；</p>
<p>（2）进入睡眠状态；</p>
<p>（3）使用按键中断唤醒芯片； </p>
<h2 id="2-睡眠模式唤醒实现"><a href="#2-睡眠模式唤醒实现" class="headerlink" title="2. 睡眠模式唤醒实现"></a><font size=3>2. 睡眠模式唤醒实现</font></h2><figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">int</span> <span class="title function_">main</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line">&#123;</span><br><span class="line"></span><br><span class="line">    HAL_Init();</span><br><span class="line"></span><br><span class="line">    SystemClock_Config();</span><br><span class="line"></span><br><span class="line">    MX_GPIO_Init();</span><br><span class="line">    MX_USART1_Init();</span><br><span class="line"></span><br><span class="line">	<span class="built_in">printf</span>(<span class="string">&quot;睡眠模式!!!\r\n&quot;</span>);</span><br><span class="line">	<span class="built_in">printf</span>(<span class="string">&quot;1.本程序中，LED0亮表示STM32正常运行，LED1亮表示睡眠状态，两者同时被熄灭表示刚从睡眠状态被唤醒\r\n&quot;</span>);</span><br><span class="line">	<span class="built_in">printf</span>(<span class="string">&quot;2.程序运行一段时间后自动进入睡眠状态，在睡眠状态下，可使用KEY0唤醒\r\n&quot;</span>);</span><br><span class="line">	<span class="built_in">printf</span>(<span class="string">&quot;3.本实验执行这样一个循环：\r\n&quot;</span>);</span><br><span class="line">	<span class="built_in">printf</span>(<span class="string">&quot;        (1)亮LED0，灭LED1(正常运行)\r\n&quot;</span>);</span><br><span class="line">	<span class="built_in">printf</span>(<span class="string">&quot;        (2)灭LED0，亮LED1(睡眠模式)\r\n&quot;</span>);</span><br><span class="line">	<span class="built_in">printf</span>(<span class="string">&quot;        (3)按KEY0唤醒-&gt;灭LED0，灭LED1(刚被唤醒)\r\n\r\n&quot;</span>);</span><br><span class="line">	</span><br><span class="line">	LED0 = <span class="number">1</span>;</span><br><span class="line">	LED1 = <span class="number">1</span>;</span><br><span class="line">    <span class="keyword">while</span> (<span class="number">1</span>)</span><br><span class="line">    &#123;</span><br><span class="line">        <span class="comment">// 正常运行程序</span></span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;(1)STM32正常运行，LED0点亮，LED1熄灭\r\n&quot;</span>);</span><br><span class="line">        LED0 = <span class="number">0</span>;LED1 = <span class="number">1</span>;</span><br><span class="line">        HAL_Delay(<span class="number">2000</span>);</span><br><span class="line"></span><br><span class="line">        <span class="comment">// 进入睡眠模式</span></span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;(2)进入睡眠模式，LED0熄灭，LED1点亮，按KEY0按键可唤醒\r\n&quot;</span>);</span><br><span class="line">        LED0 = <span class="number">1</span>;LED1 = <span class="number">0</span>;         <span class="comment">// 使用LED1指示，进入睡眠状态</span></span><br><span class="line">        HAL_SuspendTick();<span class="comment">// 暂停滴答时钟，防止通过滴答时钟中断唤醒</span></span><br><span class="line">        HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI); <span class="comment">// 进入睡眠模式</span></span><br><span class="line"></span><br><span class="line">        <span class="comment">// 等待中断唤醒  KEY0按键中断</span></span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;(3)KEY0被按下，产生中断，被唤醒，LED0熄灭，LED1熄灭\r\n&quot;</span>);</span><br><span class="line">        LED0 = <span class="number">1</span>;</span><br><span class="line">        LED1 = <span class="number">1</span>;</span><br><span class="line">        HAL_ResumeTick(); <span class="comment">// 被唤醒后，恢复滴答时钟	</span></span><br><span class="line">        HAL_Delay(<span class="number">2000</span>);	</span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;\r\n已退出睡眠模式\r\n&quot;</span>);</span><br><span class="line"></span><br><span class="line">        <span class="comment">//继续执行while循环</span></span><br><span class="line"></span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>我们根据上边的提示，可以看到对应的现象，同时串口的输出信息如下：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610195646101.png" alt="image-20230610195646101" style="zoom:50%;" />

<h1 id="三、停止模式"><a href="#三、停止模式" class="headerlink" title="三、停止模式"></a><font size=3>三、停止模式</font></h1><h2 id="1-软件设计-1"><a href="#1-软件设计-1" class="headerlink" title="1. 软件设计"></a><font size=3>1. 软件设计</font></h2><p>（1）初始化用于唤醒的中断按键；</p>
<p>（2）选择电压调节器的工作模式并进入停止状态；</p>
<p>（3）使用按键中断唤醒芯片；  </p>
<p>（4）重启 HSE 时钟，使系统完全恢复停止前的状态。  </p>
<h2 id="2-停止模式唤醒实现"><a href="#2-停止模式唤醒实现" class="headerlink" title="2. 停止模式唤醒实现"></a><font size=3>2. 停止模式唤醒实现</font></h2><figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">int</span> <span class="title function_">main</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line">&#123;</span><br><span class="line"></span><br><span class="line">  <span class="type">uint32_t</span> SYSCLK_Frequency = <span class="number">0</span>;</span><br><span class="line">  <span class="type">uint32_t</span> HCLK_Frequency = <span class="number">0</span>;</span><br><span class="line">  <span class="type">uint32_t</span> PCLK1_Frequency = <span class="number">0</span>;</span><br><span class="line">  <span class="type">uint32_t</span> PCLK2_Frequency = <span class="number">0</span>;</span><br><span class="line">  <span class="type">uint32_t</span> SYSCLK_Source = <span class="number">0</span>;</span><br><span class="line"></span><br><span class="line">  HAL_Init();</span><br><span class="line"></span><br><span class="line">  SystemClock_Config();</span><br><span class="line"></span><br><span class="line">  MX_GPIO_Init();</span><br><span class="line">  MX_USART1_Init();</span><br><span class="line"></span><br><span class="line">  <span class="built_in">printf</span>(<span class="string">&quot;停止模式!!!\r\n&quot;</span>);</span><br><span class="line">  <span class="built_in">printf</span>(<span class="string">&quot;1.本程序中，LED0亮表示STM32正常运行，LED1亮表示停止状态，两者同时被熄灭表示刚从停止状态被唤醒\r\n&quot;</span>);</span><br><span class="line">  <span class="built_in">printf</span>(<span class="string">&quot;2.程序运行一段时间后自动进入停止状态，在停止状态下，可使用KEY0唤醒\r\n&quot;</span>);</span><br><span class="line">  <span class="built_in">printf</span>(<span class="string">&quot;3.本实验执行这样一个循环：\r\n&quot;</span>);</span><br><span class="line">  <span class="built_in">printf</span>(<span class="string">&quot;        (1)亮LED0，灭LED1(正常运行)\r\n&quot;</span>);</span><br><span class="line">  <span class="built_in">printf</span>(<span class="string">&quot;        (2)灭LED0，亮LED1(停止模式)\r\n&quot;</span>);</span><br><span class="line">  <span class="built_in">printf</span>(<span class="string">&quot;        (3)按KEY0唤醒-&gt;灭LED0，灭LED1(刚被唤醒)\r\n\r\n&quot;</span>);</span><br><span class="line"></span><br><span class="line">  LED0 = <span class="number">1</span>;</span><br><span class="line">  LED1 = <span class="number">1</span>;</span><br><span class="line">  <span class="keyword">while</span> (<span class="number">1</span>)</span><br><span class="line">  &#123;</span><br><span class="line">      <span class="comment">// 正常运行程序</span></span><br><span class="line">      <span class="built_in">printf</span>(<span class="string">&quot;(1)STM32正常运行，LED0点亮，LED1熄灭\r\n&quot;</span>);</span><br><span class="line">      LED0 = <span class="number">0</span>;</span><br><span class="line">      LED1 = <span class="number">1</span>;</span><br><span class="line">      HAL_Delay(<span class="number">2000</span>);</span><br><span class="line"></span><br><span class="line">      <span class="comment">// 进入停止模式</span></span><br><span class="line">      <span class="built_in">printf</span>(<span class="string">&quot;(2)进停止模式，LED0熄灭，LED1点亮，按KEY0按键可唤醒\r\n&quot;</span>);</span><br><span class="line">      LED0 = <span class="number">1</span>;</span><br><span class="line">      LED1 = <span class="number">0</span>;                                                       <span class="comment">// 使用LED1指示，进入停止状态</span></span><br><span class="line">      HAL_SuspendTick();                                              <span class="comment">// 暂停滴答时钟，防止通过滴答时钟中断唤醒</span></span><br><span class="line">      HAL_PWR_EnterSTOPMode(PWR_MAINREGULATOR_ON, PWR_STOPENTRY_WFI); <span class="comment">// 进入停止模式</span></span><br><span class="line"></span><br><span class="line">      <span class="comment">// 等待中断唤醒  KEY0按键中断</span></span><br><span class="line">      <span class="built_in">printf</span>(<span class="string">&quot;(3)KEY0被按下，产生中断，被唤醒，LED0熄灭，LED1熄灭\r\n&quot;</span>);</span><br><span class="line"></span><br><span class="line">      SystemCoreClockUpdate(); <span class="comment">// 根据时钟寄存器的值更新SystemCoreClock变量</span></span><br><span class="line">      <span class="comment">// 获取唤醒后的时钟状态</span></span><br><span class="line">      SYSCLK_Frequency = HAL_RCC_GetSysClockFreq();</span><br><span class="line">      HCLK_Frequency = HAL_RCC_GetHCLKFreq();</span><br><span class="line">      PCLK1_Frequency = HAL_RCC_GetPCLK1Freq();</span><br><span class="line">      PCLK2_Frequency = HAL_RCC_GetPCLK2Freq();</span><br><span class="line">      SYSCLK_Source = __HAL_RCC_GET_SYSCLK_SOURCE();</span><br><span class="line">      <span class="comment">// 这里由于串口直接使用HSI时钟，不会会影响串口波特率</span></span><br><span class="line">      <span class="built_in">printf</span>(<span class="string">&quot;\r\n刚唤醒的时钟状态：\r\n&quot;</span>);</span><br><span class="line">      <span class="built_in">printf</span>(<span class="string">&quot; SYSCLK频率:%d,\r\n HCLK频率:%d,\r\n PCLK1频率:%d,\r\n PCLK2频率:%d,\r\n 时钟源:%d (0表示HSI，8表示PLLCLK)\n&quot;</span>,</span><br><span class="line">             SYSCLK_Frequency, HCLK_Frequency, PCLK1_Frequency, PCLK2_Frequency, SYSCLK_Source);</span><br><span class="line">      <span class="comment">/* 从停止模式唤醒后配置系统时钟:启用HSE、PLL*/</span></span><br><span class="line">      <span class="comment">/* 选择PLL作为系统时钟源(HSE和PLL在停止模式下被禁用)*/</span></span><br><span class="line">      SYSCLKConfig_STOP();</span><br><span class="line"></span><br><span class="line">      LED0 = <span class="number">1</span>;</span><br><span class="line">      LED1 = <span class="number">1</span>;</span><br><span class="line">      HAL_ResumeTick(); <span class="comment">// 被唤醒后，恢复滴答时钟</span></span><br><span class="line">      <span class="comment">//获取重新配置后的时钟状态</span></span><br><span class="line">      SYSCLK_Frequency = HAL_RCC_GetSysClockFreq(); </span><br><span class="line">      HCLK_Frequency   = HAL_RCC_GetHCLKFreq();</span><br><span class="line">      PCLK1_Frequency  = HAL_RCC_GetPCLK1Freq();</span><br><span class="line">      PCLK2_Frequency  = HAL_RCC_GetPCLK2Freq();</span><br><span class="line">      SYSCLK_Source    = __HAL_RCC_GET_SYSCLK_SOURCE();</span><br><span class="line"></span><br><span class="line">      <span class="comment">//重新配置时钟源后始终状态</span></span><br><span class="line">      <span class="built_in">printf</span>(<span class="string">&quot;\r\n重新配置后的时钟状态：\r\n&quot;</span>);</span><br><span class="line">      <span class="built_in">printf</span>(<span class="string">&quot; SYSCLK频率:%d,\r\n HCLK频率:%d,\r\n PCLK1频率:%d,\r\n PCLK2频率:%d,\r\n 时钟源:%d (0表示HSI，8表示PLLCLK)\n&quot;</span>, </span><br><span class="line">             SYSCLK_Frequency,HCLK_Frequency,PCLK1_Frequency,PCLK2_Frequency,SYSCLK_Source);</span><br><span class="line"></span><br><span class="line">      HAL_Delay(<span class="number">2000</span>);</span><br><span class="line">      <span class="built_in">printf</span>(<span class="string">&quot;\r\n已退出停止模式\r\n&quot;</span>);</span><br><span class="line"></span><br><span class="line">    <span class="comment">// 继续执行while循环</span></span><br><span class="line">  &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>然后会看到串口有如下的打印：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610202059514.png" alt="image-20230610202059514" style="zoom:50%;" />

<p>可以看到，唤醒后的打印都是乱码，当重新配置后，串口恢复正常。</p>
<h1 id="四、待机模式"><a href="#四、待机模式" class="headerlink" title="四、待机模式"></a><font size=3>四、待机模式</font></h1><h2 id="1-软件设计-2"><a href="#1-软件设计-2" class="headerlink" title="1. 软件设计"></a><font size=3>1. 软件设计</font></h2><p>（1）清除 WUF 标志位；</p>
<p>（2）使能 WKUP 唤醒功能；</p>
<p>（3）进入待机状态。  </p>
<p>【注意】这里其实我们需要用到的是PA0，也就是WK UP唤醒引脚，这个引脚接在了KEY_UP上，当按键按下的时候会产生一个高电平，即便这个引脚不进行初始化，照样可以产生唤醒事件，但是由于没有进行初始化，所以这种情况下不能作为普通按键使用。另外这里KEY0的中断也开着，但是实验中没有什么用。</p>
<h2 id="2-待机模式唤醒实现"><a href="#2-待机模式唤醒实现" class="headerlink" title="2. 待机模式唤醒实现"></a><font size=3>2. 待机模式唤醒实现</font></h2><figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">int</span> <span class="title function_">main</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line">&#123;</span><br><span class="line"></span><br><span class="line">    HAL_Init();</span><br><span class="line"></span><br><span class="line">    SystemClock_Config();</span><br><span class="line"></span><br><span class="line">    MX_GPIO_Init();</span><br><span class="line">    MX_USART1_Init();</span><br><span class="line"></span><br><span class="line">    <span class="built_in">printf</span>(<span class="string">&quot;停止模式!!!\r\n&quot;</span>);</span><br><span class="line">    <span class="built_in">printf</span>(<span class="string">&quot;本实验执行这样一个循环：\r\n&quot;</span>);</span><br><span class="line">    <span class="built_in">printf</span>(<span class="string">&quot;        (1)亮LED0，灭LED1(正常运行)\r\n&quot;</span>);</span><br><span class="line">    <span class="built_in">printf</span>(<span class="string">&quot;        (2)灭LED0，灭LED1(待机模式下，IO都处于高阻态，真正进入待机模式后，所有LED熄灭)\r\n&quot;</span>);</span><br><span class="line">    <span class="built_in">printf</span>(<span class="string">&quot;        (3)按KEY_UP唤醒，程序复位\r\n\r\n&quot;</span>);</span><br><span class="line">    <span class="built_in">printf</span>(<span class="string">&quot;注意：进入待机模式前(5S)，按下复位的话，可以看到会打印非待机唤醒，若是通过KEY_UP唤醒，会显示待机唤醒复位\r\n\r\n&quot;</span>);</span><br><span class="line">    LED0 = <span class="number">0</span>; LED1 = <span class="number">0</span>;</span><br><span class="line">    <span class="comment">//检测复位来源</span></span><br><span class="line">    <span class="keyword">if</span>(__HAL_PWR_GET_FLAG(PWR_FLAG_SB) == SET)</span><br><span class="line">    &#123;</span><br><span class="line">        __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);</span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;\r\n 待机唤醒复位 \r\n&quot;</span>);</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">else</span></span><br><span class="line">    &#123;</span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;\r\n 非待机唤醒复位 \r\n&quot;</span>);</span><br><span class="line">    &#125;</span><br><span class="line">    <span class="keyword">while</span> (<span class="number">1</span>)</span><br><span class="line">    &#123;</span><br><span class="line">        <span class="comment">// 正常运行程序</span></span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;(1)STM32正常运行，LED0点亮，LED1熄灭\r\n&quot;</span>);</span><br><span class="line">        LED0 = <span class="number">0</span>; LED1 = <span class="number">1</span>;</span><br><span class="line">        HAL_Delay(<span class="number">2000</span>);</span><br><span class="line"></span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;(2)即将进入待机模式(5S后进入)，进入待机模式后可按WK_UP按键唤醒，唤醒后会进行复位，程序从头开始执行\r\n&quot;</span>);</span><br><span class="line">        LED0 = <span class="number">1</span>; LED1 = <span class="number">0</span>; </span><br><span class="line">        HAL_Delay(<span class="number">5000</span>); <span class="comment">// 延时加在这里，是因为，这样会有LED变化的一个状态，当进入待机模式的时候，LED将会全部熄灭</span></span><br><span class="line">        __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU); <span class="comment">// 清除WU状态位</span></span><br><span class="line">        HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1);<span class="comment">// 使能WKUP引脚的唤醒功能 ，使能PA0</span></span><br><span class="line">        HAL_SuspendTick();<span class="comment">// 暂停滴答时钟，防止通过滴答时钟中断唤醒</span></span><br><span class="line">        HAL_PWR_EnterSTANDBYMode(); <span class="comment">// 进入待机模式</span></span><br><span class="line"></span><br><span class="line">        <span class="built_in">printf</span>(<span class="string">&quot;(3)程序从头开始执行，这一句将永远不会执行\r\n&quot;</span>);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>会看到这样的打印：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV16-STM32%E5%BC%80%E5%8F%91/LV16-29-%E7%94%B5%E6%BA%90%E7%AE%A1%E7%90%86-02-%E4%B8%89%E7%A7%8D%E6%A8%A1%E5%BC%8F%E5%AE%9E%E7%8E%B0/img/image-20230610215244192.png" alt="image-20230610215244192" style="zoom:50%;" />

<p>按下KEY_UP唤醒一次，然后在下一次进入待机模式前，按下复位，会看到打印出非待机唤醒复位。但是有一个bug，就是按下复位后，进入待机状态，总会自己再产生一次唤醒复位，目前还不清楚原因，可能是逻辑写的有问题，后边知道了再补充修改吧。</p>
<h1 id="五、电源监控"><a href="#五、电源监控" class="headerlink" title="五、电源监控"></a><font size=3>五、电源监控</font></h1><p>我们可以使用 PVD 监控 STM32 芯片的 VDD 引脚，当监测到供电电压低于阈值时会产生 PVD 中断，系统进入中断服务函数进入<strong>紧急处理过程</strong>。  这里我们实现一个掉电检测的程序。</p>
<h2 id="1-软件设计-3"><a href="#1-软件设计-3" class="headerlink" title="1. 软件设计"></a><font size=3>1. 软件设计</font></h2><p>（1）初始化 PVD 中断；</p>
<p>（2）设置 PVD 电压监控等级并使能 PVD；</p>
<p>（3）编写 PVD 中断服务函数，处理紧急任务。  </p>
<h2 id="2-掉电检测实现"><a href="#2-掉电检测实现" class="headerlink" title="2. 掉电检测实现"></a><font size=3>2. 掉电检测实现</font></h2><p>STM32CubeMX中没有相关配置，我们直接使用HAL库自己编写。</p>
<h3 id="2-1-初始化-PVD"><a href="#2-1-初始化-PVD" class="headerlink" title="2.1 初始化 PVD  "></a><font size=3>2.1 初始化 PVD  </font></h3><figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">void</span> <span class="title function_">PVD_Config</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line">&#123;</span><br><span class="line">	PWR_PVDTypeDef sConfigPVD;</span><br><span class="line">	</span><br><span class="line">	<span class="comment">/*使能 PWR 时钟 */</span></span><br><span class="line">	__HAL_RCC_PWR_CLK_ENABLE();</span><br><span class="line">	<span class="comment">/* 配置 PVD 中断 */</span></span><br><span class="line">	<span class="comment">/*中断设置，抢占优先级0，子优先级为1，之前配置2位抢占2位子优先级 */</span></span><br><span class="line">	HAL_NVIC_SetPriority(PVD_IRQn, <span class="number">0</span> ,<span class="number">1</span>);</span><br><span class="line">	HAL_NVIC_EnableIRQ(PVD_IRQn);  </span><br><span class="line"></span><br><span class="line">	<span class="comment">/* 配置PVD级别5 (PVD检测电压的阈值为2.8V，</span></span><br><span class="line"><span class="comment">	   VDD电压低于2.8V时产生PVD中断，具体数据</span></span><br><span class="line"><span class="comment">	   可查询数据手册获知) 具体级别根据自己的</span></span><br><span class="line"><span class="comment">	   实际应用要求配置*/</span></span><br><span class="line">	sConfigPVD.PVDLevel = PWR_PVDLEVEL_5;</span><br><span class="line">	sConfigPVD.Mode = PWR_PVD_MODE_IT_RISING_FALLING;</span><br><span class="line">	HAL_PWR_ConfigPVD(&amp;sConfigPVD);</span><br><span class="line">	<span class="comment">/* 使能PVD输出 */</span></span><br><span class="line">	HAL_PWR_EnablePVD();</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>（1）使能电源管理时钟。</p>
<p>（2）配置 PVD 的中断优先级。由于电压下降是非常危急的状态，所以尽量把它配置成最高优先级。</p>
<p>（3）使用库函数 HAL_PWR_ConfigPVD 设置 PVD 监控的电压阈值等级，各个阈值等级表示的电压值需要查阅 STM32 的数据手册。</p>
<p>（4）最后使用库函数 HAL_PWR_EnablePVD 使能 PVD 功能。  </p>
<h3 id="2-2-PVD-中断服务函数"><a href="#2-2-PVD-中断服务函数" class="headerlink" title="2.2 PVD 中断服务函数  "></a><font size=3>2.2 PVD 中断服务函数  </font></h3><p>我们可以从启动文件中找到这个中断服务函数：</p>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">void</span> <span class="title function_">PendSV_Handler</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line">&#123;</span><br><span class="line">  HAL_PWR_PVD_IRQHandler();</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>然后我们需要实现一个回调函数：</p>
<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">void</span> <span class="title function_">HAL_PWR_PVDCallback</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line">&#123;</span><br><span class="line">    <span class="comment">/* 实际应用中应进入紧急状态处理 */</span></span><br><span class="line">    LED0 = !LED0;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<p>注意这个中断服务函数的名是 PVD_IRQHandler 而不是 EXTI16_IRQHandler(STM32 没有这样的中断函数名)，示例中我们仅点亮了 LED 红灯，不同的应用中要根据需求进行相应的紧急处理。  </p>
<h3 id="2-3-main函数"><a href="#2-3-main函数" class="headerlink" title="2.3 main函数"></a><font size=3>2.3 main函数</font></h3><figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">int</span> <span class="title function_">main</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line">&#123;</span><br><span class="line">      HAL_Init();</span><br><span class="line"></span><br><span class="line">      SystemClock_Config();</span><br><span class="line"></span><br><span class="line">      MX_GPIO_Init();</span><br><span class="line">      MX_USART1_Init();</span><br><span class="line"></span><br><span class="line">      <span class="keyword">while</span> (<span class="number">1</span>)</span><br><span class="line">      &#123;</span><br><span class="line">            LED0 = !LED0;</span><br><span class="line">            HAL_Delay(<span class="number">500</span>);</span><br><span class="line">      &#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>

<h2 id="3-实验效果"><a href="#3-实验效果" class="headerlink" title="3. 实验效果"></a><font size=3>3. 实验效果</font></h2><p>正常来讲，当断电的时候，或者电压低于阈值的时候，会进入中断服务函数，中断服务函数中可以做一些保存数据的操作等，这里例程还没有支持存储设备，就先写在这，后边知道怎么写就行了。</p>

    </div>

    
    
    

    <footer class="post-footer">




    <div>
        
            <div style="text-align:center;color: #ccc;font-size:14px;">
            ----------本文结束
            <i class="fas fa-fan fa-spin" style="color: #FF1493; font-size: 1rem"></i>
            感谢您的阅读----------
            </div>
        
    </div>





  
  <div class="my_post_copyright"> 
    <p><span>文章标题:</span><a href="/post/12c32d69.html">LV16-29-电源管理-02-三种模式实现</a></p>
    <p><span>文章作者:</span><a href="/" title="欢迎访问 《苏木》 的学习笔记">苏木</a></p>
    <p><span>发布时间:</span>2023年06月11日 - 16:26</p>
    <p><span>最后更新:</span>2025年06月14日 - 00:25</p>
    <p><span>原始链接:</span><a href="/post/12c32d69.html" title="LV16-29-电源管理-02-三种模式实现">https://sumumm.github.io/post/12c32d69.html</a></p>
    <p><span>许可协议:</span><i class="fab fa-creative-commons"></i> <a rel="license" href= "https://creativecommons.org/licenses/by-nc-nd/4.0/" target="_blank" title="Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)">署名-非商业性使用-禁止演绎 4.0 国际</a> 转载请保留原文链接及作者。</p>  
  </div>
  


          <div class="post-tags">
              <a href="/tags/LV16-STM32%E5%BC%80%E5%8F%91/" rel="tag"><i class="fa fa-tag"></i> LV16-STM32开发</a>
          </div>

        

          <div class="post-nav">
            <div class="post-nav-item">
                <a href="/post/abbabeb8.html" rel="prev" title="LV16-30-RTC-01-RTC基础知识">
                  <i class="fa fa-angle-left"></i> LV16-30-RTC-01-RTC基础知识
                </a>
            </div>
            <div class="post-nav-item">
                <a href="/post/f6279550.html" rel="next" title="LV16-29-电源管理-01-基础知识">
                  LV16-29-电源管理-01-基础知识 <i class="fa fa-angle-right"></i>
                </a>
            </div>
          </div>
    </footer>
  </article>
</div>






</div>
  </main>

  <footer class="footer">
    <div class="footer-inner">

  <div class="copyright">
    &copy; 2017 – 
    <span itemprop="copyrightYear">2025</span>
    <span class="with-love">
      <i class="fa fa-heart"></i>
    </span>
    <span class="author" itemprop="copyrightHolder">苏木</span>
  </div>
<div class="wordcount">
  <span class="post-meta-item">
    <span class="post-meta-item-icon">
      <i class="fa fa-chart-line"></i>
    </span>
      <span>站点总字数：</span>
    <span title="站点总字数">3.7m</span>
  </span>
  <span class="post-meta-item">
    <span class="post-meta-item-icon">
      <i class="fa fa-coffee"></i>
    </span>
      <span>站点阅读时长 &asymp;</span>
    <span title="站点阅读时长">225:26</span>
  </span>
</div>




    <span id="sitetime"></span>
    <script defer language=javascript>
        function siteTime()
        {
            window.setTimeout("siteTime()", 1000);
            var seconds = 1000;
            var minutes = seconds * 60;
            var hours = minutes * 60;
            var days = hours * 24;
            var years = days * 365;
            var today = new Date();
            var todayYear = today.getFullYear();
            var todayMonth = today.getMonth()+1;
            var todayDate = today.getDate();
            var todayHour = today.getHours();
            var todayMinute = today.getMinutes();
            var todaySecond = today.getSeconds();
            /*==================================================
            Date.UTC() -- 返回date对象距世界标准时间(UTC)1970年1月1日午夜之间的毫秒数(时间戳)
            year        - 作为date对象的年份，为4位年份值
            month       - 0-11之间的整数，做为date对象的月份
            day         - 1-31之间的整数，做为date对象的天数
            hours       - 0(午夜24点)-23之间的整数，做为date对象的小时数
            minutes     - 0-59之间的整数，做为date对象的分钟数
            seconds     - 0-59之间的整数，做为date对象的秒数
            microseconds - 0-999之间的整数，做为date对象的毫秒数
            ==================================================*/
            var t1 = Date.UTC(2017, 
                              5, 
                              19, 
                              0, 
                              0, 
                              0); //北京时间
            var t2 = Date.UTC(todayYear,todayMonth,todayDate,todayHour,todayMinute,todaySecond);
            var diff = t2-t1;
            var diffYears = Math.floor(diff/years);
            var diffDays = Math.floor((diff/days)-diffYears*365);
            var diffHours = Math.floor((diff-(diffYears*365+diffDays)*days)/hours);
            var diffMinutes = Math.floor((diff-(diffYears*365+diffDays)*days-diffHours*hours)/minutes);
            var diffSeconds = Math.floor((diff-(diffYears*365+diffDays)*days-diffHours*hours-diffMinutes*minutes)/seconds);
            document.getElementById("sitetime").innerHTML="已在这里 "+diffYears+" 年 "+diffDays+" 天 "+diffHours+" 小时 "+diffMinutes+" 分钟 "+diffSeconds+" 秒";
        }
        siteTime();
    </script>



    </div>
  </footer>

  
  <div class="back-to-top" role="button" aria-label="返回顶部">
    <i class="fa fa-arrow-up fa-lg"></i>
    <span>0%</span>
  </div>
  <div class="reading-progress-bar"></div>

<noscript>
  <div class="noscript-warning">Theme NexT works best with JavaScript enabled</div>
</noscript>


  
  <script src="https://cdnjs.cloudflare.com/ajax/libs/animejs/3.2.1/anime.min.js" integrity="sha256-XL2inqUJaslATFnHdJOi9GfQ60on8Wx1C2H8DYiN1xY=" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/next-theme-pjax/0.6.0/pjax.min.js" integrity="sha256-vxLn1tSKWD4dqbMRyv940UYw4sXgMtYcK6reefzZrao=" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/fancyapps-ui/5.0.28/fancybox/fancybox.umd.js" integrity="sha256-ytMJGN3toR+a84u7g7NuHm91VIR06Q41kMWDr2pq7Zo=" crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/lozad.js/1.16.0/lozad.min.js" integrity="sha256-mOFREFhqmHeQbXpK2lp4nA3qooVgACfh88fpJftLBbc=" crossorigin="anonymous"></script>
<script src="/js/comments.js"></script><script src="/js/utils.js"></script><script src="/js/motion.js"></script><script src="/js/next-boot.js"></script><script src="/js/pjax.js"></script>

  <script src="https://cdnjs.cloudflare.com/ajax/libs/hexo-generator-searchdb/1.4.1/search.js" integrity="sha256-1kfA5uHPf65M5cphT2dvymhkuyHPQp5A53EGZOnOLmc=" crossorigin="anonymous"></script>
<script src="/js/third-party/search/local-search.js"></script>




  <script src="/js/third-party/fancybox.js"></script>

  <script src="/js/third-party/pace.js"></script>


  




  

  <script class="next-config" data-name="enableMath" type="application/json">false</script><script class="next-config" data-name="mathjax" type="application/json">{"enable":true,"tags":"none","js":{"url":"https://cdnjs.cloudflare.com/ajax/libs/mathjax/3.2.2/es5/tex-mml-chtml.js","integrity":"sha256-MASABpB4tYktI2Oitl4t+78w/lyA+D7b/s9GEP0JOGI="}}</script>
<script src="/js/third-party/math/mathjax.js"></script>


 
        <div id="click-show-text"
            data-mobile = false
            data-text = 富强,民主,文明,和谐,自由,平等,公正,法制,爱国,敬业,诚信,友善
            data-fontsize = 15px
            data-random= false>
        </div>
       

      
        <script async src=https://cdn.jsdelivr.net/npm/hexo-next-mouse-effect@latest/click/showText.js></script>
      

      
    




    <script async src="/js/fancybox_param.js"></script>





<!-- APlayer本体 -->



</body>
</html>
